Patents by Inventor Hans-Werner Köhler

Hans-Werner Köhler has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Coating formulation having improved rheological properties
    Patent number: 8038787
    Abstract: The present invention relates to coating formulations comprising surface-modified silicon dioxides. The coating formulations are useful in applications such as architectural paints for buildings, windows and doors.
    Type: Grant
    Filed: June 16, 2005
    Date of Patent: October 18, 2011
    Assignee: Evonik Degussa GmbH
    Inventors: Hans-Dieter Christian, Reinhard Behl, Hans-Werner Köhler, Jürgen Meyer
  • Lacquer formulation for improving surface properties
    Patent number: 7842129
    Abstract: A coating formulation containing at least one surface-modified silicon dioxide having a 60° reflectometer value of <3 and a black number My of at least 140 has excellent performance properties, for example, a very good transparency.
    Type: Grant
    Filed: June 13, 2005
    Date of Patent: November 30, 2010
    Assignee: Evonik Degussa GmbH
    Inventors: Hans-Dieter Christian, Reinhard Behl, Hans-Werner Köhler, Uwe Schmeier, Jürgen Meyer
  • Coating formulation having improved rheological properties
    Publication number: 20050282935
    Abstract: The present invention relates to coating formulations comprising surface-modified silicon dioxides. The coating formulations are useful in applications such as architectural paints for buildings, windows and doors.
    Type: Application
    Filed: June 16, 2005
    Publication date: December 22, 2005
    Applicant: DEGUSSA AG
    Inventors: Hans-Dieter Christian, Reinhard Behl, Hans-Werner Koehler, Juergen Meyer